Saliha Kirici

Comparing the effect of sub-critical water extraction with conventional extraction methods on the chemical composition of Lavandula stoechas

The volatile extract composition of Lavandula stoechas flowers obtained by hydrodistillation (HD), subcrtical water extraction (SbCWE) and organic solvent extraction under ultrasonic irradiation (USE) were estimated by gas chromatography-mass spectrometry (GC-MS). One hundred and twenty four components were detected in SbCWE extracts while 94 and 65 signals were gained from HD and USE extracts, respectively. Most of the constituents were identified. The major compounds in all three extracts were fenchon, camphor, myrtenyl acetate, myrtenol and 1,8-cineol, but they differ in quantitatively. The total monoterpene hydrocarbons are higher in HD and USE extracts than those of SbCWE extract. However, SbCWE extract had higher concentration of light oxygenated compounds which contributes to the fragrance of the oil in a major extension. Heavy-oxygenated compounds was also in higher abundance in SbCWE extract (9.90%) than those of HD and USE extracts (3.19 and 4.78%, respectively). Effect of temperature on the extraction yield of SbCWE was investigated and while oil yield was increasing with an increase in temperature, a decrease in the extraction ability of sub-critical water toward the more polar compounds such as, 1,8-cineol, camphor and fenchon, was observed. Kinetic studies shown that SbCWE is clearly quicker than conventional alternatives. Most of components of volatile compounds were extracted at 15min.

Laurel (Laurus nobilis L.): A Less-Known Medicinal Plant to the World with Diffusion, Genomics, Phenomics, and Metabolomics for Genetic Improvement

Medicinal plants have gained the world’s attention due to their application in various ways. Laurel (Laurus nobilis. L) is a very important medicinal plant of the Mediterranean region. Traditionally this plant has been successfully used in medicine, and its essential oil has great importance. Genomics, breeding, and metabolomics of different crops have remained the main focus of researchers, which made this plant to less known to the world. Most of the researchers only worked about the essential oil and its antibacterial and antioxidant activities. However, still almost no work has been done about the breeding aspects of this important plant. The present review offers an overview about the origin, diffusion, genomics, phenomics, breeding, and metabolomics of laurel. This information would be very helpful for the researchers who are interested in the breeding of this plant.

Domestication and Determination of Yield and Quality Aspects of WildMenthaSpecies Growing in Southern Turkey

Menthaspecies are cultivated in many countries commercially because of their valuable essential oil. Mint, which has anti-spasmatic, carminative, gastral, stimulating, and diuretic effects has been grown as a spice and curative plant. Mint oil is the richest natural source of menthol, which is widely used in medicine, food and cosmetics industry1,2.